MATTHEW KARR DO
NPI 1912467481
Student in an Organized Health Care Education/Training Program in New York, NY
About Matthew Karr Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW KARR DO (NPI 1912467481) is an individual student in an organized health care education/training program in New York, New York and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Matthew Karr Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Matthew Karr reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10019
NEW YORK, NY 10019
NEW YORK, NY 10019
NEW YORK, NY 10019
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Matthew Karr's NPI number?
The NPI number for Matthew Karr is 1912467481. It was assigned to this individual provider in the NPPES registry on March 21, 2019.
Where is Matthew Karr located?
Matthew Karr practices at 1000 10th Ave, New York, NY 10019. The listed phone number is (973) 224-9073.
What is Matthew Karr's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Matthew Karr enrolled in Medicare?
Yes. Matthew Karr is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Matthew Karr's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Karr reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Matthew Karr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Matthew Karr was last updated on March 27, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Matthew Karr, DO · NPI 1912467481
Student in an Organized Health Care Education/Training Program provider in New York, New York. Individual provider, active in the CMS NPPES registry since March 21, 2019.
## Identity
- **NPI:** 1912467481 (Entity type: Individual)
- **Enumerated:** March 21, 2019
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1000 10TH AVE, New York, NY 10019-1147
- **Phone:** (973) 224-9073
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 27, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1912467481) · Data from the CMS NPPES public registry.